Wire grooving and milling machine.



N/T/YEJJES E. E. JOHNSON.

WIRE GROOVING AND MILLING MACHINE. APPLICATION FILED MAR. 17, 1913.

HE NORRIS PETERS CO PHOTO-LITHOI. WASHINGTON. B4 c.

Patented June 1, 1915.

3 SHEETS-SHEET l- E. E.' JOHNSON.

WHRE GROOVING AND MILLING MACHINE.

APPLICATION FILED MAR. 1?. 1913.

19141 71 31 Patented June 1, 1915.

3 SHEETS-SHEET 2. 32 2a 1 l/ 30:

THE NORRIS PETERS CO PHOTO-LITHQ. WASHINGTON. D. c

E. E. JOHNSON.

WIR E GROOVING AND MILLING MACHINE.

APPLICATION FILED MAR. 17, 1913.

Patehted June 1, 1915.

3 SHEETS-SHEET 3- I THE NORRIS PETERS C0,. FHDTD-LITHOU WASHINGTON. D. c.

EDWARD E. JOHNSON, OF PAUL, MINNESOTA.

.WIRE GROOVIN Gr AND MILLING MACHINE.

Specification of Letters Patent.

Patented June 1, 1915.

Original application filed June 4, 1908, Serial No. 436,648. Divided and this application filed March 17,

' 1913. Serial No. 754,915. 7

To all whom it may concern:

Be it known that I, EDWARD E. JOHNSON, a citizen of the United States, resident of St. Paul, county of Ramsey, State of Minnesota, have invented certain new and useful Improvements in Wire Grooving and Milling Machines, of which the following is a specification.

The object of my invention is to provide a machine having means for grooving and milling a strand of wire which is subsequently coiled into a tube to form a well screen, this application being divided out of my pending application filed June 4, 1908, Serial No. 436,648, for tube forming machines.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure l is a plan view of a tube forming machine embodying my invention, Fig. 2 is a sectional view through the frame and arbor of the milling mechanism, Fig. 3 is a front elevation of the milling mechanism, Fig. 4 is a detail sectional view of the milling guide, Fig. 5 is a sectional view on the line yu of Fig. 2, Fig. 6 is a sectional view, on the line .ea of Fig. 2, Fig. 7 is a sectional view on the line 0c00 of Fig. 2, Fig. 8 is a perspective view of the wire before milling, Fig. 9 is a similar view, showing the wire after milling, Fig. 10 is a perspective view, showing a section of the completed tube with the coils of the wire locked together.

In the drawing, 2 represents a suitable base, upon which the frame 3 of the machine is mounted. The wire 4 is fed to the machine from a reel, not shown. The wire is obtained from wire-drawing mills, formed in cross section, substantially as illustrated in Fig. 8, and the first step in the operation of the machine is to form a groove of the required depth, illustrated at the right hand of Fig. 9, and one that will be uniform throughout the entire length of the wire. To accomplish this I provide adjustable guide rollers 5 and 6, between which the wire is inserted. A saw arbor 7 is journaled in a bracket 8 and provided with a suitable driving pulley 9. This pulley is driven independently of the other mechanism of the machine by a belt 10, (see Fig. 2) to enable the operator to start the saw and speed it up to the desired point before setting the rest of the mechanism in motion. I am also able to stop the machine and start it again with out afiecting the milling operation.

The arbor 7 has a device for end adjustment consisting, preferably, of a threaded thrust collar 11 and a loose thrust ring 12 for reducing the wear. A collet 13 is pinned on the arbor and has arecess in one end to receive the projecting end of a boX 14 of said arbor. At its opposite end the collet has a broad bearing face 15 between which and a corresponding face 16 on a collet 17 the saw 18 is gripped and held. The faces of these collets are made as large as possible to support the saw close to the work, for as the groove is cut deeper on one side than on the other the saw would tend to bind unless supported laterally.

19 is a guide, (see Figs. 2 and 5) having a longitudinal groove 20 in its underside arranged to contact with and support the wire on the top, bottom and inner edge. Guide blocks 21 are provided, having holes 22 therein to receive pins 23, said holes being of sufficient size to permit lateral adjustment of said blocks by means of adjusting screws 24 mounted in the housing 25. These guide blocks support the outer edge of the wire and are held in close contact therewith by the adjusting screws. The guide 19 has an inclined rear face 26 and a wedge 27 is adapted to fit between said face and the wall of the housing 25 and has a threaded end secured by a sleeve nut in an arm 28. See Fig. 6. By adjusting the sleeve nut, the wedge may be moved lengthwise to release or clamp the guide. The guide is held against the wedge by means of adjusting screws 29, (see Fig. 2). Transverse bars 30, fitting within recesses in the housing and thetop of the guide, lock the latter against lengthwise movement. By means of the wedge and the adjustingscrews, the guide may be moved in or out to adjust the wire laterally with respect to the saw, and by means ofthe guide blocks 21, the tension of the wire as it is drawn through the guide can be regulated. The position of the guide is varied vertically with respect to the saw arbor to accommodate it to saws of difierent diameter and to regulate the cut of the saw in making tubing of diflerent sizes. This I accomplish by making the housing 25 vertically slidable on the bracket 8 in which the saw arbor is mounted. The housing andv 17 being locked against rotary movement by its feathered connection with the arbor.

A milling. cutter has an inwardly projecting lip 36 interlocking with the lip on the inner end of the collar 33 and a pin 37 is mounted in the collar 33 and arranged to project into a groove 38 in a cap 39 and in the end of the cutter, whereby the cap is locked against rotary movement and the collar is prevented from turning, except with the cap 39. This cap fits loosely on the collar and the outer end of the arbor is threaded and provided with a lock nut 40, which bears on the said cap and normally locks it against endwise movement. The milling cutter is provided with a series of milling teeth 41. 7

From the foregoing, it is evident that if the arbor 7 is held against rotation and the lock nut 40 is loosened, the cutter 35,

the collar 33 and the cap 39 may be re- 'olved as one piece and the threaded connection between the collar 33 and the collet 17 will cause endwise movement of the milling tool and adjust it with reference to the edge of the wire. When the lock nut 40 is tightened the collet 17 will be forced against the saw and through friction between the threads of the collet 17 and the collar 33 will lock tion and against rotation with respect to the saw. The milling tool will also be forced against the lipat the inner end of the collar 33 and be locked against endwise movement with respect to the .arbor. I am thus able, by means of one lock nut, to hold the saw and the milling tool in any desired relative position. It is important to do this, as I am thus able to regulate the amount cut ofl the edge of the wire by the cutter and determine the proper width of the groove formed between the coils of the wire in the completed tube. The width of this groove will vary with different conditions and may be made according to the needs of each particular case.

The housing incloses the outer portion of the arbor and extends back to the outer journal and permits the free discha'rgeof the cuttings of the saw and the milling tool, and for the purpose of keeping'the cutters 'cool and clean I prefer to provide a nozzle 41 arranged to direct a the milling tool in posifluid through the wall of the housing upon the cutting tool.

The recess'edend of the collet 13 inclosing the box 1 1 prevents any of the tool cuttings and liquid from working into the bearings. The cap 39 has a lip 42 formed thereon between which and the endof the milling tool an annular recess43 is formed to collect the liquid from the 'tool and throw it off by centrifugal force within the housing. The opening in the wall of the housing through which the cap 39 extends must necessarily be of suflicient size to allow vertical adjustment of the housing. Consequently the lip and recessare neces sary to prevent the liquid from flowing out on the cap and being thrown ofi therefrom upon the floor and other parts of the machine. A discharge opening 44 for the tool cuttings is provided, beneath which suitable receptacles, (not shown) may be arranged to receive the cuttings and return the liquid to the pumpto be usedover again.

I claim as my invention 1. The combination, with a circular. saw,

of a guide arranged above the saw and havmg a groove in its under surface through which a wire is fed, the walls of said groove supporting the wire on the top, bottom and inner edge, and a milling device for the edge of the wiref 2. The combination, with a circular saw, of a guide having a groove to receive a wire and arranged to hold the face of'the' wire upon said saw, and a milling device mounted to operate upon one edge of the wire.

3. The combination, with a circular'saw, of a guide having a groove above saidsaw and adapted to receive a wire and guide the same, a housing wherein said guide is mounted and means for adjusting said housing vertically to vary the position of the guide with respect to the saw anda milling device mounted to operate on the edge of the wire.

4. The comb natiomwith a circular saw,

of a guide having a groove therein to receive a wire, said guide having an inclined face on one side and for adjusting said wedge device lengthwise to move said guide laterally and change the position of said groove with respect to the saw and a revolving milling tool mounted to operate on the edge of the wire. 3

:5. The combination, with a circular saw,

of a guide through which the wire is fed; past the saw,

tension thereon and a milling tool operating -on the edge of the wire.

and means for regulating the 6. The combmatlomwltha circular saw,

of a wire guide and pressure blocks arranged to bear "on a wire and hold its face in the path of the saw and regulate the tension thereon, and a milling tool mounted to operateon one edge ofthe wire.

7. The combination, with a saw, of a guide block adapted to receive a wire and direct a wedge device, and means 7 7 it over the saw, a housing wherein said guide block is mounted, pressure blocks arranged to engage one edge of the Wire, and means for adjusting said pressure blocks to increase or decrease their pressure on said Wire and regulate the tension thereon and means for milling the edge of the Wire.

8. The combination, with a saw arbor, of a collet secured on said arbor and having a broad bearing face at one end, a second collet also mounted on said arbor and having a broad bearing face at one end, and a saw mounted on said arbor between said broad bearing faces and held securely thereby, said bearing faces supporting the saw on each side thereof outwardly from the arbor to the bases of the teeth, and a guide through which a Wire is adapted to be fed to said saw and means for milling one edge of the wire.

9. The combination, with a circular saw, of a wire guide having means for holding the under face of the wire upon the saw, and a revolving milling tool mounted to operate on the edge of the Wire.

10. The combination, with a circular saw, of a Wire guide having a groove therein to direct a wire past said saw, said saw cutting a longitudinal groove in the under side of said wire and a milling tool arranged to engage the edge of said Wire.

11. The combination, With a circular saw, of a guide having means for directing the face of a wire thereon, a milling tool mounted to engage the edge of the wire, and means for adjusting said tool toward and from the W1re.

12. The combination, with a circular saw, of a guide having means for holding a wire in the path of the saw, a milling tool arranged to engage and trim the edge of-the wire in said guide, a sleeve having means for moving said tool away from said wire, a cap inclosing said sleeve and adapted to move said tool toward said wire, said cap having a feathered connection with said sleeve, Whereby they will rotate simultaneously, and an arbor having a threaded end carrying a nut bearing on said cap.

13. The combination, with a saw arbor, of a circular saw secured thereon, collets mount ed on said arbor and between which said saw is held, one of said collets having an outer threaded end and feathered on said arbor, an interiorly threaded sleeve fitting the threaded end of said collet, an annular milling tool inclosing the inner portion of said threaded collet, said sleeve having means engaging said tool to move the same outwardly, a cap inclosing said sleeve and having a pin and groove connection therewith, and means for adjusting said cap to move said milling tool inwardly, said sleeve turning on its collet simultaneously with said cap.

14. The combination, with a frame, of a saw arbor, journaled therein, a saw mounted on said arbor, a housing carried by said frame and means for adjusting said housing vertically on said frame, and a guide block carried by said housing above said saw and having a groove to receive a Wire and direct it over said saw and a milling device for the edge of the wire.

15. A milling head comprising a guide block having a groove to receive the wire to be milled, a milling tool operating to trim one edge of the wire in combination with a circular saw mounted to simultaneously operateon a face of the wire.

16. A milling head comprising a guide block having a groove adapted to receive a wire fed lengthwise therein, means for tensioning the edge of the wire, a milling tool operating on an edge of the wire to trim the same, means for adjusting said tool toward and from the Wire, and a circular saw mounted to operate on the face of the wire simultaneously with the operation of said milling tool.

In witness whereof, I have hereunto set my hand this 10th day of March, 1913.

EDWARD E. JOHNSON.

Witnesses:

GENEVIEVE E. SoRENsEN, EDWARD A. PAUL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

